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Universal 1/2 Circle Water Filter Housing Wrench

The PFW190 is a universal 1/2 circle water filter housing wrench that fits most Standard Filter Housings. The housing wrench as a C-style open end that fits around most standard housings. The PFW190 wrench can be used for standard size and Slim-Line water filter housings. The wrench has a 3-5/8-inch C-Style opening. The edge of the opening is a little smaller than the rest. It has little bumps (about 1/2-inch wide) on both sides. The opening here is 3-5/8-inch. Then it is 3-3/4-inch. Use for twisting off the water filter housing sumps. Do NOT use the universal PFW190 wrench to tighten the housing sumps. Overtightening the sump can cause damage to the o-rings and make reopening the housing sump difficult. You should only hand tighten the housing sump. The universal filter wrench makes replacing water filters easy.